Modified TS-1 for shape selective phenol hydroxylation to hydroquinone

N. K. Mal*, P. Kumar, M. Sasidharan, M. Matsukata

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

A new method of modification of TS-1 by weak base (aqueous NH3) treatment leads to formation of bigger crystals and generation of internal hydroxyl groups as evident by SEM and IR (hydroxyl region). All the catalysts were characterized using, XRD, N2-sorption, UV-VIS, FT-IR and SEM. Activity of the modified and unmodified TS-1 were compare in the hydroxylation of phenol to hydroquinone and catechol in presence of aqueous H 2O2. A ratio of hydroquinone to catechol over modified, (TS-1(33)/OH1 and unmodified, TS-1(33) catalysts were 1.40 and 1.15, respectively, using H2O as solvent, and 2.01 and 1.68, respectively, using MeOH as solvent. Modification of TS-1 with strong base (e.g. NaOH) causes decrease in crystallinity, and hence decreases the conversion of phenol and selectivity of hydroquinone. A new mechanism controlling the product selectivity is proposed.

本文言語English
ページ(範囲)2618-2625
ページ数8
ジャーナルStudies in Surface Science and Catalysis
154 C
DOI
出版ステータスPublished - 2004

ASJC Scopus subject areas

  • 触媒
  • 凝縮系物理学
  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

フィンガープリント

「Modified TS-1 for shape selective phenol hydroxylation to hydroquinone」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル